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  1. JDK
  2. JDK-8253691

[s390] Use flag kind "diagnostic" for platform specific flags

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    • Icon: CSR CSR
    • Resolution: Approved
    • Icon: P4 P4
    • 16
    • hotspot
    • behavioral
    • minimal
    • -XX:+UnlockDiagnosticVMOptions need to be specified in addition when using them.
    • add/remove/modify command line option

      Summary

      Current platform implementation in globals_s390.hpp uses regular product flags for everything.

      Problem

      These platform specific flags were never intended for official support. They are only there to diagnose issues and find workarounds.

      Solution

      Change flag kind to "diagnostic".

      Specification

      Change these flags from regular product to diagnostic:

      ReoptimizeCallSequences

      UseByteReverseInstruction

      ExpandLoadingBaseDecode

      ExpandLoadingBaseDecode_NN

      ExpandLoadingBaseEncode

      ExpandLoadingBaseEncode_NN

      MVCLEThreshold

      PreferLAoverADD

      TraceTraps

            mdoerr Martin Doerr
            mdoerr Martin Doerr
            David Holmes, Lucy Schmidt
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              Created:
              Updated:
              Resolved: